perf/x86/intel/uncore: Fix reference count leak in snr_uncore_mmio_map()
authorXiongfeng Wang <wangxiongfeng2@huawei.com>
Fri, 18 Nov 2022 06:31:36 +0000 (14:31 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Dec 2022 12:31:57 +0000 (13:31 +0100)
commitdc7f07bc1ebb56a23fd1c4f664db5cbeb8900800
tree813091ff5c37210ad262dd566a25497b2451f41e
parentbd66877c0b3b42eed0ecee0bd2a2a505c1e54177
perf/x86/intel/uncore: Fix reference count leak in snr_uncore_mmio_map()

[ Upstream commit 8ebd16c11c346751b3944d708e6c181ed4746c39 ]

pci_get_device() will increase the reference count for the returned
pci_dev, so snr_uncore_get_mc_dev() will return a pci_dev with its
reference count increased. We need to call pci_dev_put() to decrease the
reference count. Let's add the missing pci_dev_put().

Fixes: ee49532b38dd ("perf/x86/intel/uncore: Add IMC uncore support for Snow Ridge")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20221118063137.121512-4-wangxiongfeng2@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/events/intel/uncore_snbep.c